Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab

A construction method and technology of laminated beams, applied in the direction of joists, girders, truss beams, etc., can solve the problems of easy oxidation of joint metal materials, large amount of steel used for beam body joints, and structural limitations of beam heights, etc., to achieve convenient concrete reduction , Improve the strength, improve the effect of load capacity

Inactive Publication Date: 2009-07-22
刘馨裕
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  • Application Information

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Problems solved by technology

[0003] The first purpose of the present invention is to provide a prefabricated hollow composite beam for the defects and deficiencies of the existing beam members, such as large ineffective dead weight, beam height limited by the structure, and difficult to increase.
[0004] The second purpose of the present invention is

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  • Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab
  • Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab
  • Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with accompanying drawing description and specific embodiment:

[0026] see figure 1 , figure 2 , image 3 , a prefabricated hollow composite beam of the present invention, which is prefabricated by steel bars and concrete, a through hole 1 is provided in the center of the section of the beam body 2, and a Vertical fibers 4 connected by ribs 7 .

[0027] The through hole 1 is a round hole or a waist circular hole arranged along the height direction of the beam body 2, so as to reduce the physical space of the neutral axis of the beam body 2 as much as possible, and the cross-sectional area of ​​the through hole 1 is generally 1 / 3-2 / 3 of the cross-sectional area of ​​body 2. The through hole 1 on the beam body 2 can reduce the self-weight to the greatest extent so as to improve the load capacity and reduce the proportion of invalid materials.

[0028] Such as figure 1 , image 3 As sho...

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Abstract

A cast-in-place construction method for a prefabricated folded hollow beam and a precast slab belongs to the technical field of building elements. The section center of a beam body (2) is provided with a through hole (1). A vertical fiber (4) which is connected with a vertical bar of an inner frame (7) of the beam body (2) is arranged at the upper part of the beam body (2). The method comprises the following steps: A. the two sides of the upper plane surface of the beam body (2) are relatively provided with precast slabs (3), and a pouring joint is reserved between the precast slabs (3) and the vertical fiber (4); and B. the contact joint of the precast slabs (3) of the beam body (4) is cast with concrete until the vertical fiber (4) is buried by the concrete, or the concrete is cast entirely above the beam body (2) and the precast slabs (3), and then the cast-in-place beam slab can be formed after jolt ramming, trowelling, curing and solidification. The weight of the beam body (2) can be reduced. The additive effect generated by the vertical fiber leads to comparatively large enhancement of the beam height, and no occupation of inner space of the building structure. The cast-in-place beam slab is suitable for the buildings of the frame structure and the high rise buildings.

Description

technical field [0001] The invention relates to a construction method of prefabricated beams and beam-slab components, in particular to a prefabricated hollow composite beam and a cast-in-place construction method of beams and prefabricated slabs. It belongs to the technical field of concrete prefabricated components and building construction. Background technique [0002] At present, with the continuous improvement of people's living standards, home decoration is also increasingly emphasizing personalized redesign, high-end and luxury. Adapting to this, the structural form of the house is also based on the frame structure that creates flexible and variable elastic space. as the subject. The main forms of frame structure are cast-in-place reinforced concrete frame structure and assembled frame structure, among which the assembled frame structure is mostly steel structure. Because the joints of assembled concrete structural members mostly adopt the "steel stool" type, the a...

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Application Information

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IPC IPC(8): E04C3/20E04B5/04
Inventor 刘馨裕
Owner 刘馨裕
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